diff --git a/readme10-12.md b/readme10-12.md
index e69791d..7071665 100644
--- a/readme10-12.md
+++ b/readme10-12.md
@@ -51,6 +51,8 @@
     - [Math Module](#math-module)
     - [Random Module](#random-module)
   - [💻 Exercises: Day 12](#%f0%9f%92%bb-exercises-day-12)
+
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 # 📘 Day 10
 ## Loops
 Life is full of routines. In programming also we do lots of repetitive tasks. In order to handle repetitive task programming languages provide loops. Python programming language also provides the following types of two loops to handle looping. 
diff --git a/readme13-15.md b/readme13-15.md
index 140e561..c47262b 100644
--- a/readme13-15.md
+++ b/readme13-15.md
@@ -46,7 +46,7 @@
     - [ValueError](#valueerror)
     - [ZeroDivisionError](#zerodivisionerror)
   - [💻 Exercises: Day 15](#%f0%9f%92%bb-exercises-day-15)
-
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 # 📘 Day 13
 
 ## List Comprehension
diff --git a/readme16-18.md b/readme16-18.md
index a1d9dc7..3027835 100644
--- a/readme16-18.md
+++ b/readme16-18.md
@@ -55,7 +55,7 @@
     - [Quantifier in RegEx](#quantifier-in-regex)
     - [Cart ^](#cart)
   - [💻 Exercises: Day 18](#%f0%9f%92%bb-exercises-day-18)
-
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 # 📘 Day 16
 
 ## Python Datetime
diff --git a/readme19-21.md b/readme19-21.md
index 5680e22..d9a0f35 100644
--- a/readme19-21.md
+++ b/readme19-21.md
@@ -52,7 +52,7 @@
     - [Inheritance](#inheritance)
     - [Overriding parent method](#overriding-parent-method)
   - [💻 Exercises: Day 21](#%f0%9f%92%bb-exercises-day-21)
-
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 # 📘 Day 19
 
 ## File handling
diff --git a/readme22-24.md b/readme22-24.md
index f028ba3..b70ce91 100644
--- a/readme22-24.md
+++ b/readme22-24.md
@@ -26,6 +26,7 @@
   - [Statistics Module](#statistics-module)
 - [NumPy](#numpy)
 
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 # 📘 Day 22
 
 ## Python Web Scraping
diff --git a/readme25-27.md b/readme25-27.md
index f49a6b7..2570dd9 100644
--- a/readme25-27.md
+++ b/readme25-27.md
@@ -66,7 +66,7 @@
     - [Delete Document](#delete-document)
     - [Drop a collection](#drop-a-collection)
   - [💻 Exercises: Day 27](#%f0%9f%92%bb-exercises-day-27)
-
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 # 📘 Day 25
 ## Pandas
 
diff --git a/readme28-30.md b/readme28-30.md
index f8957ae..206b929 100644
--- a/readme28-30.md
+++ b/readme28-30.md
@@ -582,6 +582,7 @@ if __name__ == '__main__':
 ## Conclusions
 In the process of preparing this material I I have learning quite a lot and you have inspired me to do more. Congratulations for making it to this level. If you have done all the exercise and the projects, now you are capable to go a data analysis, data science, machine learning or web development.
 
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